// Copyright (c) 2010. Eric Nelson  
// https://code.google.com/p/prompts/
// All rights reserved.
//     
// Redistribution and use in source and binary forms,   
// with or without modification, are permitted provided   
// that the following conditions are met:    
// * Redistributions of source code must retain the   
// above copyright notice, this list of conditions and   
// the following disclaimer.    
// * Redistributions in binary form must reproduce   
// the above copyright notice, this list of conditions   
// and the following disclaimer in the documentation   
// and/or other materials provided with the distribution.    
// * Neither the name of Eric Nelson nor the   
// names of its contributors may be used to endorse   
// or promote products derived from this software   
// without specific prior written permission.    
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND   
// CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,   
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF   
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE   
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR   
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,   
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,   
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR   
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS   
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,   
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING   
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE   
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF   
// SUCH DAMAGE.
// 
//     
// [This is the BSD license, see  
// http://www.opensource.org/licenses/bsd-license.php]  
using System.Collections.ObjectModel;

namespace Prompts.Prompting.ViewModels.Search.Implementation
{
    public class SearchService : ISearchService
    {
        private readonly ISearchStringParser<ISearch> _searchStringParser;
        private readonly ISearchablePromptItemCollection _searchablePromptItemCollection;

        public SearchService(ISearchablePromptItemCollection searchablePromptItemCollection, ISearchStringParser<ISearch> searchStringParser)
        {
            _searchablePromptItemCollection = searchablePromptItemCollection;
            _searchStringParser = searchStringParser;
        }

        public SearchService(ISearchStringParser<ISearch> searchStringParser)
        {
            _searchStringParser = searchStringParser;
        }

        public ObservableCollection<ISearchablePromptItem> GetAll()
        {
            return _searchablePromptItemCollection.Enumeration;
        }

        public ObservableCollection<ISearchablePromptItem> Search(string searchExpression)
        {
            var searchTask = _searchStringParser.Parse(searchExpression);
            return searchTask.Execute(_searchablePromptItemCollection);
        }
    }
}